package shortlink.admin.test;


import cn.hutool.core.util.RandomUtil;

public class test {
    public static void main(String[] args) {
        A b = new B();
        b.hello();

    }
}

class B extends A{
    public static void hello(){
        System.out.println("hello B");
    }
}

class A{
    public static void hello(){
        System.out.println("hello A");
    }
}